from math import sqrt


def add(x, y):
    return x + y


def subtraction(x, y):
    return x - y


def mcl(x, y):
    return x * y


def division(x, y):
    return x / y


def divide exactly(x, y):
    return x // y


def remainder(x, y):
    return x % y


def extraction a root(x, y):
    return x ** y


if __name__ == "__main__":
    print(add(1, 2))
    print(subtraction(2, 3))
    print(mcl(5, 6))
    print(divesion(7, 7))
    print(divide exactly(4, 2))
    print(remainder(8, 2))
    print(extraction a root(2, 2))
    print(sqrt(8))
